Artifact Details Title Slide-A-Mat main unit Catalog Number 102691205 Type Physical object Identifying Numbers Other number 3,373,654 On power supply inside of the main unit. Dimensions overall: 48 in x 48 in x 30 in Description The object consists of a wood case containing two slide projectors with a folding shelf on the front that contains five buttons for operating the machine. Category Miscellaneous/other